
Handheld Manual Gate Valve is a heavy-duty industrial isolation valve designed for high-pressure and high-temperature service.
Engineered to GB/T 12234 standards, this valve features a wedge-type flexible gate that ensures a tight, bubble-proof seal even under fluctuating pipeline conditions.
Description
Engineered for durability and precision, this Manual Gate Valve provides a robust solution for managing high-pressure and high-temperature flow. It utilizes a wedge-shaped gate that moves perpendicular to the flow path, ensuring a tight metal-to-metal seal when closed. The design minimizes pressure drop in the fully open position, making it highly efficient for long-term industrial operations. With its rugged construction, it is built to withstand harsh environments while requiring minimal maintenance.
Features
- Premium Sealing Technology: The valve seat and gate faces are built-up using iron-base alloys or Cobalt-base hard alloys (Stellite). This welding process creates a surface that is exceptionally wear-resistant, thermostable, and anti-corrosive, significantly extending service life.
- Flexible Wedge Structure: The gate is designed with a wedge-type flexible structure. For medium and large-caliber valves, thrust bearings are integrated to ensure the handwheel operates smoothly, allowing for easy opening and closing without excessive force.
- Advanced Stem Treatment: The valve stem undergoes quenching and nitriding treatments. This process provides the stem with superior surface hardness, scratch resistance, and protection against atmospheric corrosion.
- Highly Adaptable Design: The valve body is compatible with a wide variety of pipe flange standards and sealing surface types (such as RF, FM, or RJ), making it versatile for diverse engineering projects.
- Customizable Materials: Depending on your specific working conditions (pressure, temperature, and medium), the body material, packing, and gaskets can be customized (e.g., WCB, 304, 316, or specialized alloys).
Specifications
| Specification | Standard Reference |
| Design and Manufacture | GB/T 12234 |
| Structure Length (Face-to-Face) | GB/T 12221 |
| Pressure-Temperature Rating | GB/T 12224 |
| Connection Flange | HG/T 20592 |
| Test and Inspection | GB/T 26480 |
Applications
- Petrochemical: Refineries and chemical processing lines handling high-temperature oils.
- Power Generation: Main steam and water feed systems in power plants.
- Water Treatment: Large-scale industrial water supply and drainage.
- Metallurgy: High-pressure gas and liquid pipelines in smelting facilities.










